Personality Types:
Myers-Briggs Type Indicator:
INTJ / Mastermind

A person who is INTJ in the Myers-Briggs Type Indicator is said to be a mastermind. This person is Introverted, Intuitive, Thinking and Judgmental. They tend to be on their own, like theoretical information, think rationally about how to deal with it, and make judgments based on that.